
var hideBtn = document.getElementsByClassName('hide-login-btn')[0];
var showBtn = document.getElementsByClassName('show-login-btn')[0];
var loginBox = document.getElementsByClassName('login-box')[0];

showBtn.addEventListener('click', function(){
    loginBox.className = "login-box showed";
});

hideBtn.addEventListener('click', function(){
    loginBox.className = "login-box";
});









